<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<style>
html, body{
height:100%;
}
</style>
<body style="height:100%">

    <canvas id="canvas" style="height:100%">
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    </canvas>

    <script src="digit.js"></script>
    <script src="countdown.js"></script>
</body>
</html>